Tier 2

Increases the armor and resistances given by your Frost Armor and Ice Armor spells by 25/50%. In addition, gives your
Frost Ward and Fire Ward a 15/30% chance to negate the warded damage spell and restore mana equal to the damage caused.

Increases your chance to critically hit with Frostbolt by an additional 1/2/3% and gives your Frost damage spells a
33/66/100% chance to apply the Winter's Chill effect, which increases the chance spells will critically hit the target by 1% for 15

Tier 9

(Requires 1 point in Summon Water Elemental). Increases the duration of your Summon Water Elemental spell by
5/10/15 sec and your Frostbolt spell has a 33/66/100% chance to grant the Replenishment effect to up to 10 party or raid members

mana regeneration equal to 0.25% of their maximum mana per second for 15 sec.